From eba3a7bdcc83bba73a116b92fbc5f92aad5250ec Mon Sep 17 00:00:00 2001
From: Sidharth Vinod <sidharthv96@gmail.com>
Date: Wed, 26 Apr 2023 10:55:37 +0530
Subject: [PATCH] Add unsupported text

---
 .../src/rendering-util/handle-markdown-text.spec.ts      | 9 +++++++++
 .../mermaid/src/rendering-util/handle-markdown-text.ts   | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/packages/mermaid/src/rendering-util/handle-markdown-text.spec.ts b/packages/mermaid/src/rendering-util/handle-markdown-text.spec.ts
index c8e08eed2..8ae519cfa 100644
--- a/packages/mermaid/src/rendering-util/handle-markdown-text.spec.ts
+++ b/packages/mermaid/src/rendering-util/handle-markdown-text.spec.ts
@@ -242,3 +242,12 @@ test('markdownToHTML - Mixed formatting', () => {
   const output = markdownToHTML(input);
   expect(output).toEqual(expectedOutput);
 });
+
+test('markdownToHTML - Unsupported formatting', () => {
+  expect(
+    markdownToHTML(`Hello
+  - l1
+  - l2
+  - l3`)
+  ).toMatchInlineSnapshot('"<p>Hello</p>Unsupported markdown: list"');
+});
diff --git a/packages/mermaid/src/rendering-util/handle-markdown-text.ts b/packages/mermaid/src/rendering-util/handle-markdown-text.ts
index 3a7319922..a8b73aec7 100644
--- a/packages/mermaid/src/rendering-util/handle-markdown-text.ts
+++ b/packages/mermaid/src/rendering-util/handle-markdown-text.ts
@@ -68,7 +68,7 @@ export function markdownToHTML(markdown: string): string {
     } else if (node.type === 'paragraph') {
       return `<p>${node.children.map(output).join('')}</p>`;
     }
-    return '';
+    return `Unsupported markdown: ${node.type}`;
   }
 
   return children.map(output).join('');